add getChainId to utils

Author: SeddikBellamine

packages/sdk/src/utils/getChainId.ts

@@ -0,0 +1,34 @@
+import {
+  JsonRpcProvider,
+  BrowserProvider,
+  AbstractProvider,
+  AbstractSigner,
+  Eip1193Provider
+} from 'ethers';
+import { DEFAULT_CHAIN_ID } from '../config/config.js';
+
+type EthersCompatibleProvider =
+  | string
+  | AbstractProvider
+  | AbstractSigner
+  | Eip1193Provider;
+
+export async function getChainIdFromProvider(ethProvider: EthersCompatibleProvider): Promise<number> {
+  try {
+    if (typeof ethProvider === 'string') {
+      const provider = new JsonRpcProvider(ethProvider);
+      const network = await provider.getNetwork();
+      return Number(network.chainId);
+    } else if ('request' in ethProvider) {
+      const provider = new BrowserProvider(ethProvider as Eip1193Provider);
+      const network = await provider.getNetwork();
+      return Number(network.chainId);
+    } else if ('getNetwork' in ethProvider) {
+      const network = await (ethProvider as AbstractProvider).getNetwork();
+      return Number(network.chainId);
+    }
+  } catch (e) {
+    console.warn('Failed to detect chainId:', e);
+  }
+  return DEFAULT_CHAIN_ID;
+}